Service Guide Publication Number 54916- 97009 October 2013 © Agilent Technologies, Inc.
Agilent Infiniium 90000 X-Series Oscilloscopes at a Glance Ease of use with high performance The Agilent Infiniium 90000 X-Series oscilloscopes combine unprecedented ease-ofuse with high-performance digitizing oscilloscope functionality to simplify your design and analysis measurement tasks. • Traditional oscilloscope front-panel interface provides direct access to the controls needed for most troubleshooting tasks.
In This Service Guide This guide provides the service information for the Agilent Technologies 90000 X- Series and 90000 L- Series oscilloscopes. It is divided into seven chapters. Chapter 1, "General Information," describes which oscilloscope models are covered by this guide, supplied accessories, and where to find the specifications for the 90000 XSeries / 90000 L- Series oscilloscopes. Chapter 2, "Calibration," describes the types of calibrations, and how and when to run the user calibration procedure.
1 Instruments covered by this service guide Accessories supplied 7 Specifications and Characteristics 7 General Information 6
Instruments covered by this service guide Oscilloscopes manufactured after the date this manual was released may be different from those described in this manual. The release date of this manual is shown on the title page. This manual will be revised when necessary. If you have an oscilloscope that was manufactured after the release of this manual, please check the Agilent Technologies website at www.agilent.com to see whether a newer version of this manual is available.
Chapter 1: General Information Accessories supplied Accessories supplied The following accessories are supplied.
Chapter 1: General Information Specifications and Characteristics Pollution Degree Definitions 8 Pollution Degree 1: No pollution or only dry, non-conductive pollution occurs. The pollution has no influence. Example: A clean room or climate-controlled office environment. Pollution Degree 2. Normally only dry non-conductive pollution occurs. Occasionally a temporary conductivity caused by condensation may occur. Example: General indoor environment.
2 Running a Self Calibration Calibration 11
Calibration A calibration is simply an oscilloscope self- adjustment. The purpose of a calibration is performance optimization. There are three ways to calibrate an Infiniium oscilloscope: • User mode, also known as normal mode, a normal calibration, user calibration, or self calibration. User mode includes the minimum set of calibrations and is intended to be run by oscilloscope users. The user must be logged in as an administrator to run a self calibration.
Chapter 2: Calibration Running a self calibration Running a self calibration Let the Oscilloscope Warm Up Before Adjusting Warm up the oscilloscope for 30 minutes before starting the calibration procedure. Failure to allow warm up may result in inaccurate calibration. The self calibration uses signals generated in the oscilloscope to calibrate channel sensitivity, offsets, and trigger parameters. There are three times we recommend performing a self calibration: • At least once a year.
Chapter 2: Calibration Running a self calibration Figure 2-1 Calibration Dialog Box Clear this check box before starting calibration Click here to start calibration 4 Click Start, then follow the instructions on the screen. The routine will ask you to do the following steps: a Disconnect everything from all inputs and Cal Out. b Indicate whether you want to run time scale and interleave correction calibrations.
Chapter 2: Calibration Running a self calibration Figure 2-2 Digital channels cable orientation CAUTION Insert the digital channels cable carefully into the MSO calibrator to prevent damage to the pins. Use the notches on the cable and the MSO calibrator to orient the cable correctly. See Figure 2- 3. Figure 2-3 MSO calibrator Alignment notches 6 After the calibration procedure is completed, click Close.
Chapter 2: Calibration Running a self calibration 14
3 Vertical Performance Verification 17 Offset Accuracy Test 18 DC Gain Accuracy Test 25 Analog Bandwidth - - Maximum Frequency Test Time Scale Accuracy (TSA) Test 37 Performance Test Record 39 Testing Performance 30
This section describes performance test procedures. Performance Test Interval The procedures in this section may be performed for incoming inspection and should be performed periodically to verify that the oscilloscope is operating within specification. The recommended test interval is once per year or after 2000 hours of operation. Performance should also be tested after repairs or major upgrades. Performance Test Record A test record form is provided at the end of this section.
Chapter 3: Testing Performance Vertical Performance Verification This section contains the following vertical performance verification tests: • • • • Offset Accuracy Test DC Gain Accuracy Test Analog Bandwidth - - Maximum Frequency Test Time Scale Accuracy (TSA) Test 17
Offset Accuracy Test CAUTION Ensure that the input voltage to the oscilloscope never exceeds ±5 V. Let the oscilloscope warm up before testing. The oscilloscope under test must be warmed up (with the oscilloscope application running) for at least 30 minutes prior to the start of any performance test. Specifications Offset Accuracy ≤ 3.5 V: ±(2% of channel offset + 1% of full scale + 1 mV) > 3.5 V: ±(2% of channel offset + 1% of full scale) Full scale is defined as 8 vertical divisions.
Chapter 3: Testing Performance Offset Accuracy Test b When the Acquisition Setup window appears, enable averaging and set the # of averages to 256 as shown below. 3 Filter out waveform noise by forcing the measurement calculations to wait until the average is computed. a Select Measure > Setup. b Check the Wait for average to complete for measurements box. c Click Close. 4 Configure the scope to measure Average voltage on channel 1 as follows: a Change the vertical scale of channel 1 to 10 mV/div.
Chapter 3: Testing Performance Offset Accuracy Test b Click the V avg measurement on the left side of the screen.
Chapter 3: Testing Performance Offset Accuracy Test 5 Press [Clear Display] on the scope and wait for the #Avgs value (top right corner of screen) to return to 256. Record the scope's mean V avg reading in the Zero Error Test section of the Performance Test Record. Notes • For all scope readings in this procedure, use the mean value in the Measurements display area at the bottom of the screen.
Chapter 3: Testing Performance Offset Accuracy Test Offset Gain Test 1 Make the connections to scope channel 1 as shown below.
Chapter 3: Testing Performance Offset Accuracy Test e When the Enter Measurement Info window appears, ensure that the V avg function is set up as follows and then click OK: Source = Channel 1 Measurement area = Entire Display 4 Set the channel 1 offset value to 400.0 mV by using the front panel control or: a Pull down the Setup menu and select Channel 1 or click the Channel 1 setup icon. b Click the Offset control arrows to change the offset value or click on the offset value and enter 400.
Chapter 3: Testing Performance Offset Accuracy Test 7 Change the channel 1 offset value to - 400.0 mV. 8 Set the Cal Out voltage to - 400.0 mV. 9 Press [Clear Display] on the scope, wait for the #Avgs value (top left corner of screen) to return to 256, and then record the DMM voltage reading as VDMM- and the scope Vavg reading as VScope- in the Offset Gain Test section of the Performance Test Record. 10 Change the channel 1 offset value to 0 mV. 11 Set the Cal Out voltage to 0 mV.
Chapter 3: Testing Performance DC Gain Accuracy Test DC Gain Accuracy Test CAUTION Ensure that the input voltage to the oscilloscope never exceeds ±5 V. Let the oscilloscope warm up before testing. The oscilloscope under test must be warmed up (with the oscilloscope application running) for at least 30 minutes prior to the start of any performance test. Specifications DC Gain Accuracy ±2% of full scale at full resolution channel scale Full scale is defined as 8 vertical divisions.
Chapter 3: Testing Performance DC Gain Accuracy Test Procedure 1 Make the connections to scope channel 1 as shown below.
Chapter 3: Testing Performance DC Gain Accuracy Test b When the Acquisition Setup window appears, enable averaging and set the # of averages to 256 as shown below. 3 Filter out waveform noise by forcing the measurement calculations to wait until the average is computed. a Select Measure > Setup. b Check the Wait for average to complete for measurements box. c Click Close. 4 Set the Cal Out voltage (VCal Out) to +30 mV as follows: a Select Utilities > Calibration Output.
Chapter 3: Testing Performance DC Gain Accuracy Test 5 Set the channel 1 vertical scale value to 10 mV/div by using the front panel control or: a Pull down the Setup menu and select Channel 1 or click the Channel 1 setup icon. b Change the vertical scale of channel 1 to 10 mV/div. c Select the Vavg measurement as shown below.
Chapter 3: Testing Performance DC Gain Accuracy Test Record the mean reading 7 Change the Cal Out voltage to - 30 mV. 8 Press [Clear Display] on the scope, wait for the #Avgs value to return to 256 and then record the DMM voltage reading and the scope V avg reading in the DC Gain Test section of the Performance Test Record. 9 Calculate the DC gain using the following expression and record this value in the DC Gain Test section of the Performance Test Record.
Chapter 3: Testing Performance Analog Bandwidth -- Maximum Frequency Test Analog Bandwidth - - Maximum Frequency Test CAUTION Ensure that the input voltage to the oscilloscope never exceeds ±5 V. Let the oscilloscope warm up before testing. The oscilloscope under test must be warmed up (with the oscilloscope application running) for at least 30 minutes prior to the start of any performance test. Specification Analog Bandwidth (-3 dB) MSO/DSO/DSAX91304A 13.0 GHz MSO/DSO/DSAX91604A 16.
Chapter 3: Testing Performance Analog Bandwidth -- Maximum Frequency Test Connections Microwave CW Generator E8257D Power meter E4418A or E4419A Oscilloscope Power splitter 11667C Connection saver Power sensor cable 11901A adapter Microwave cable Power sensor E4413A 11901C adapter Notes • Connect output 1 of the 11667C splitter to the scope Channel n input directly using the 11901A adapter and a connector saver (either 5061-5311 or 1250-3758 depending on the oscilloscope’s bandwidth), without any addi
Chapter 3: Testing Performance Analog Bandwidth -- Maximum Frequency Test c Set the horizontal scale to 16 ns/div (to display 8 cycles of a 50 MHz waveform). Click here and enter 16 ns d Select Setup > Acquisition and then set up the acquisition parameters as follows: Sin(x)/x Interpolation = Auto Analog Averaging = Disabled Analog Memory Depth = Automatic Analog Sampling rate = 80 GSa/s (maximum) e Select Measure > Voltage > V rms.
Chapter 3: Testing Performance Analog Bandwidth -- Maximum Frequency Test f When the Enter Measurement Info window appears, configure this measurement as follows: Source = Channel 1 Measurement Area = Entire Display RMS Type = AC 7 Set the generator to apply a 50 MHz sine wave with a peak- to- peak amplitude of about 4 divisions. • Use the following table to determine the approximate required signal amplitude. The amplitude values in the table below are not absolutely required.
Chapter 3: Testing Performance Analog Bandwidth -- Maximum Frequency Test 9 Press [Clear Display] on the scope and record the scope V rms reading in the Analog Bandwidth - Maximum Frequency Check section of the Performance Test Record (Vout @ 50 MHz). Notes • For all scope readings in this procedure, use the mean value in the Measurements display area at the bottom of the screen.
Chapter 3: Testing Performance Analog Bandwidth -- Maximum Frequency Test 11 Change the generator frequency to the maximum value for the model being tested as shown in the table below. It is not necessary to adjust the signal amplitude at this point in the procedure.
Chapter 3: Testing Performance Analog Bandwidth -- Maximum Frequency Test 16 Change the scope setup as follows: a Change the channel vertical scale to 20 mV/div. b Reset the horizontal scale to 16 ns/div (to display 8 cycles of a 50 MHz waveform). 17 Change the generator output as follows: a Reset the generator frequency to 50 MHz. b Change the amplitude to the value suggested for this scale in Table 3- 1. 18 Repeat steps 8, 9, and 10 to measure the reference gain at 50 MHz for this scale.
Chapter 3: Testing Performance Time Scale Accuracy (TSA) Test Time Scale Accuracy (TSA) Test This procedure verifies the maximum TSA specification for the oscilloscope. Equipment Required Equipment Critical Specifications Recommended Model/Part Synthesized sine wave source Output Frequency: ≥ 10 MHz Output Amplitude: 0 dBm Frequency Resolution: 0.1 Hz Agilent E8267D PSG 10 MHz frequency reference Output Frequency: 10 MHz Absolute Frequency Error: < ±0.0275 ppm Agilent 53132A opt.
Chapter 3: Testing Performance Time Scale Accuracy (TSA) Test Connections Connect the equipment as shown in the following figure. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Procedure Configure the sine wave source to output a 0 dBm (600 mVpp) sine wave into 50 ohms with a frequency of 10.00002000 MHz. Adjust source amplitude such that displayed sine wave is 600 mVpp. Press [Default Setup] on the oscilloscope. Set channel 1's vertical scale to 100 mV/div. Set the oscilloscope sample rate to 100 kSa/s.
Chapter 3: Testing Performance Performance Test Record Performance Test Record Agilent Technologies Agilent 90000-X Series / 90000-L Series Oscilloscopes Model Number _____________________ Tested by___________________ Serial Number ___________________________ Work Order No.
Chapter 3: Testing Performance Performance Test Record Offset Gain Test Vertical Scale Channel 1 10 mV/div 20 mV/div 50 mV/div 100 mV/div 200 mV/div 500 mV/div 1 V/div Channel 2 10 mV/div 20 mV/div 50 mV/div 100 mV/div 200 mV/div 500 mV/div 1 V/div Channel 3 10 mV/div 20 mV/div 50 mV/div 100 mV/div 200 mV/div 500 mV/div 1 V/div Channel 4 10 mV/div 20 mV/div 50 mV/div 100 mV/div 200 mV/div 500 mV/div 1 V/div VCal Out Setting VDMM+ VDMM- VDMM0 VScope+ VScope- VScope0 Calculated Offset Gain Error Off
Chapter 3: Testing Performance Performance Test Record DC Gain Accuracy Test Vertical Scale Channel 1 10 mV/div 20 mV/div 50 mV/div 100 mV/div 200 mV/div 500 mV/div 1 V/div Channel 2 10 mV/div 20 mV/div 50 mV/div 100 mV/div 200 mV/div 500 mV/div 1 V/div Channel 3 10 mV/div 20 mV/div 50 mV/div 100 mV/div 200 mV/div 500 mV/div 1 V/div Channel 4 10 mV/div 20 mV/div 50 mV/div 100 mV/div 200 mV/div 500 mV/div 1 V/div VCal Out Setting VDMM+ VDMM- VScope+ VScope- Calculated DC Gain Error DC Gain Error Tes
Chapter 3: Testing Performance Performance Test Record Analog Bandwidth - Maximum Frequency Check Max frequency: MSO/DSO/DSAX91304A = 13 GHz, MSO/DSO/DSAX91604A = 16 GHz, MSO/DSO/DSAX92004A = 20 GHz, MSO/DSO/DSAX92504A = 25 GHz, MSO/DSO/DSAX92804A = 28 GHz, DSO/DSA93004L = 30 GHz, MSO/DSO/DSAX93204A = 32 GHz .
Time Scale Accuracy Measured Time Scale Error (ppm) Years Since Calibration (years) Low Test Limit (ppm) High Test Limit (ppm) Pass/Fail ___________ ___________ ___________ ___________ ___________ 43
Chapter 3: Testing Performance Performance Test Record 44
4 Primary Trouble Isolation 47 Power Supply Troubleshooting 51 Setting Up the BIOS 62 Motherboard Verification 63 Display Troubleshooting 64 Acquisition/Backplane Assembly Troubleshooting Keyboard Troubleshooting 67 LED Troubleshooting 68 Touch Screen Troubleshooting 69 Checking Probe Power Outputs 70 MSO Assembly Troubleshooting 71 Before You Contact Agilent 73 Troubleshooting 66
Troubleshooting The service strategy for troubleshooting Agilent 90000 Series oscilloscopes is to isolate problems to a faulty assembly, then use the disassembly and assembly procedures in the "Replacing Assemblies" chapter to replace the defective assembly. Read the Safety Notices at the back of this guide before servicing the oscilloscope. Before performing any procedure, review any cautions and warnings included in the procedures.
Chapter 4: Troubleshooting Primary Trouble Isolation Primary Trouble Isolation The main procedural tool in this chapter is the flowchart. The Primary Trouble Isolation flowchart in Figure 4- 1 shows the entire troubleshooting path from a failed oscilloscope to a working one, and directs you to other sections in this chapter where the procedures are described in detail. Reference letters on the flowcharts in this chapter point to procedural steps that explain the brief instructions in the flowchart.
Chapter 4: Troubleshooting Primary Trouble Isolation A Perform power- up. Connect the oscilloscope power cord and press the power button in the lower left corner of the front panel. If the oscilloscope is working properly, it will take several minutes to start up and the graticule will appear on the screen. The exact appearance may look slightly different than shown in Figure 4- 2, depending on the setup selected before the oscilloscope was turned off.
Chapter 4: Troubleshooting Primary Trouble Isolation The Front Panel Keyboard Test window appears with a symbolic representation of the keyboard. See Figure 4- 3. When you press a key or turn a knob in both directions, the corresponding symbol on this screen turns green. Figure 4-3 Knob and key self test screen 3 Press each key on the keyboard until you have pressed all keys.
Chapter 4: Troubleshooting Primary Trouble Isolation Figure 4-4 LED test screen 3 Repeatedly press [Single] on the front panel to step through and highlight each LED symbol in the test screen. You can also step through the LEDs by pressing the << Prev or Next >> buttons on the screen. Verify that the corresponding LEDs on the front panel are the only ones illuminated.
Chapter 4: Troubleshooting Power Supply Troubleshooting Power Supply Troubleshooting This section provides information to help you isolate the problem to the assembly level when the power system is not operating. There are three main types of faults: • Under- voltage faults • Over- temperature faults • Over- voltage faults To determine what type of fault is occurring, and what assembly needs to be replaced, follow these steps: 1 Unplug the oscilloscope so the +5V standby power supply can fully discharge.
Chapter 4: Troubleshooting Power Supply Troubleshooting To locate all four sets of LEDs, remove the handle, outer oscilloscope cover, and inner top cover to expose the motherboard cavity and top edges of the backplane assembly. The first set of LEDs is located in the upper right corner of the backplane assembly (see Figure 4- 5). Six of the LEDs indicate an under- voltage fault, and four indicate an over- temperature fault. Another LED in this group is BULK SUPPLY FAIL, located below NEG SUPPLY FAIL.
Chapter 4: Troubleshooting Power Supply Troubleshooting The other three groups of LEDs indicate over- voltage faults. One group is located near the center of the top edge of the backplane assembly just above the blue and red SATA cables (see Figure 4- 6). Figure 4-6 Over-voltage indicator LEDs on backplane assembly If any of these LEDs are lit, the backplane assembly must be replaced.
Chapter 4: Troubleshooting Power Supply Troubleshooting Locate the other two groups of over- voltage fault LEDs along the edges of the two acquisition assemblies. They are visible through the bottom fan opening located on the left side of the oscilloscope, nearest the rear panel (see Figure 4- 7 and Figure 4- 8). Figure 4-7 Over-voltage indicator LEDs on acquisition assembly behind fan Figure 4- 8 shows the fan opening with the fan removed.
Chapter 4: Troubleshooting Power Supply Troubleshooting The following table shows each LED, the type of fault it indicates, and what to do if that LED indicator is illuminated.
Chapter 4: Troubleshooting Power Supply Troubleshooting If the FP SUPPLY FAIL LED is Lit If the FP SUPPLY FAIL LED is the only one lit, there might be a problem with one of the supplies that goes to the front panel assembly, or a problem on the front panel assembly. Unplug the front panel power connector (see cable connector circled in Figure 4- 9) and turn the oscilloscope on again.
Chapter 4: Troubleshooting Power Supply Troubleshooting 3 4 5 6 plugged into the LO or COMMON input of the DVM. On a good backplane assembly, you should measure about 700 ohms. If there is a short on this board, you would measure something very near 0 ohms. If there is a short, disconnect the power cable to the front panel (see Figure 4- 9) and redo the resistance measurement. If the short is gone, replace the front panel assembly and verify that the oscilloscope now powers on.
Chapter 4: Troubleshooting Power Supply Troubleshooting 7 If there is still a short circuit, remove both acquisition boards and unplug them from the backplane assembly. 8 Measure each assembly individually to see if there is a short between the +12V trace and ground (see Figure 4- 12). You should see a resistance of about 2000 ohms between the +12V trace and ground on a good acquisition assembly.
Chapter 4: Troubleshooting Power Supply Troubleshooting Figure 4-13 Measuring the backplane assembly resistance between +12V and ground across Q1409. If the MAIN FAN FAIL LED is Lit If the MAIN FAN FAIL LED is lit, the problem is a cooling system failure. Four fans are located on the left side of the oscilloscope to cool it. It is possible that the circuitry that generates the reference potential for the fans has failed.
Chapter 4: Troubleshooting Power Supply Troubleshooting Figure 4-14 Case fans 3 Apply AC power to the oscilloscope and turn it on if it does not start up automatically. Visually check to see if any of the fans are not turning. If none of the fans are turning, it is likely a problem with the high side drive circuitry for the case fans. In that case, you would replace the backplane assembly. If any of the fans are turning, then they are probably not the cause of your shutdown problem.
Chapter 4: Troubleshooting Power Supply Troubleshooting Figure 4-15 Trigger ICs fan on backplane assembly Apply AC power and turn the oscilloscope on if it does not start up on its own. Notice whether the trigger ICs fan is turning. If it is not, replace it and redo this part of the diagnostic test.
Chapter 4: Troubleshooting Setting Up the BIOS Setting Up the BIOS If the BIOS settings become corrupt, the Infiniium oscilloscope PC motherboard will not recognize the hard drive and the oscilloscope may not start. To configure the motherboard BIOS parameters to the default settings, follow these steps: 1 Connect the power cable to the oscilloscope. 2 Connect the external keyboard to the rear panel.
Chapter 4: Troubleshooting Motherboard Verification Motherboard Verification If you have been through the Power Supply Troubleshooting section of this chapter and the oscilloscope still does not stay powered up, the problem may be with the motherboard. To diagnose this problem, follow these steps. 1 Remove the handle, outer case, and top shield. 2 Turn the oscilloscope on. If the unit beeps once after about 5 to 10 seconds but fails to boot up, the motherboard is defective and needs to be replaced.
Chapter 4: Troubleshooting Display Troubleshooting Display Troubleshooting &RQQHFW H[WHUQDO PRQLWRU WR 9*$ SRUW 7XUQ RQ SRZHU 'RHV GLVSOD\ DSSHDU RQ H[W PRQLWRU" 1R 5HSODFH PRWKHUERDUG
Chapter 4: Troubleshooting Display Troubleshooting WARNING SHOCK HAZARD! The backlight inverter assembly, which is mounted at the front corner of the oscilloscope near the flat- panel display, operates at 1.65 kV at turn on. DO NOT handle this assembly while it is in operation. An LED on the inverter board illuminates to indicate the presence of high voltage. WARNING INJURY CAN RESULT! Once the cover is removed, the fan blades are exposed both inside and outside the chassis.
Chapter 4: Troubleshooting Acquisition/Backplane Assembly Troubleshooting Acquisition/Backplane Assembly Troubleshooting This section describes which board assembly to replace if any of the scope self tests fail. When the self- test error message file is generated it is sent to the following location: C:\ProgramData\Agilent\Infiniium\selftest\selftestlog.txt The error message usually indicates the channel with the error. Channels 1 and 2 are on the lower acquisition board.
Chapter 4: Troubleshooting Keyboard Troubleshooting Keyboard Troubleshooting 1 2 3 4 CAUTION Use this procedure only if you encounter key failures in the keyboard self- test procedure. If any knobs fail, replace the keyboard assembly. Disconnect the power cord and remove the cover. Remove the front panel assembly. See chapter 6 for instructions. Remove the keyboard assembly from the front panel assembly.
Chapter 4: Troubleshooting LED Troubleshooting LED Troubleshooting If you see a failure with the on/off switch backlight LED, replace the On/Off board. If the LED will still not illuminate, replace the motherboard and see if this fixes the problem. If the LED still does not work, the last option is to check the on/off cable connecting the On/Off board to the motherboard.
Chapter 4: Troubleshooting Touch Screen Troubleshooting Touch Screen Troubleshooting 'RHV WKH WRXFK VFUHHQ ZRUN"
Chapter 4: Troubleshooting Checking Probe Power Outputs Checking Probe Power Outputs Probe power outputs are on the front panel, in the lower left corner of the 3.5mm inputs. Refer to Figure 4- 19 to check the power output at the connectors. Measure the voltages with respect to the ground terminal on the front panel, located near Aux Out. Measure the voltages at pins 2 and 5 only (+12V and - 12V). These supplies, and all others, come from the front panel.
Chapter 4: Troubleshooting MSO Assembly Troubleshooting MSO Assembly Troubleshooting This section describes problems that may occur when an MSO assembly is installed, and how to troubleshoot them. The MSO printed circuit assembly is located below the lower acquisition board, with the components facing downward. LEDs on MSO Assemblies The MSO printed circuit board has two sets of LEDs. One set is visible from the right side of the oscilloscope, and the other set is visible from the left side.
Chapter 4: Troubleshooting MSO Assembly Troubleshooting Figure 4-20 MSO cable direction 72
Chapter 4: Troubleshooting Before You Contact Agilent Before You Contact Agilent If you have read this Troubleshooting chapter and have unresolved questions about troubleshooting the oscilloscope, be ready to provide system information such as the current software version and installed options. This information will be useful when you contact Agilent Technologies. To find and save system information, follow these steps: 1 Select Help > About Infiniium.
Chapter 4: Troubleshooting Before You Contact Agilent 74
5 ESD Precautions 76 Tools Required 76 To return the oscilloscope to Agilent Technologies for service 77 To remove and replace the cover, top plate, and bottom plate 78 To remove and replace the front panel assembly 82 To remove and replace front panel assembly parts 86 To remove and replace the motherboard 89 To remove and replace the acquisition boards/backplane/optional MSO assembly To remove the backplane assembly from the acquisition/optional MSO assembly To set the calibration factors after replacing
Replacing Assemblies Use the procedures in this chapter when removing and replacing assemblies and parts in the Agilent Technologies oscilloscopes. In general, the procedures are placed in the order to follow for removing a particular assembly. The procedures listed first are for assemblies that must be removed first. The graphics in this chapter are representative of the oscilloscope at the time of this printing. Your unit may look different.
Chapter 5: Replacing Assemblies To return the oscilloscope to Agilent Technologies for service WARNING SHOCK HAZARD! When the bulk 12V power supply is removed from the oscilloscope, two AC leads are exposed. Therefore, the power cable should be disconnected from the bulk 12V power supply before the supply is removed. Be careful to avoid contact with these leads as severe shock could result.
Chapter 5: Replacing Assemblies To remove and replace the cover, top plate, and bottom plate To remove and replace the cover, top plate, and bottom plate Use this procedure to remove and replace the cover, top plate, and bottom plate. When necessary, refer to other removal procedures. The pictures in this chapter are representative of the oscilloscope at the time of this printing. Your unit may look different. 1 Disconnect the power cable.
Chapter 5: Replacing Assemblies To remove and replace the cover, top plate, and bottom plate 7 Remove the three M4 screws located on the top edge of the rear panel of the oscilloscope (torque to 18 in- lbs when installing), then turn the instrument on its side and remove the ten M3 screws located on the underside of the oscilloscope that attach the outer cover to the chassis (torque to 5 in- lbs when installing).
Chapter 5: Replacing Assemblies To remove and replace the cover, top plate, and bottom plate Figure 5-5 9 Once the cover is off, you can remove the top plate by removing the three M3 screws from its rear edges and then pulling the plate toward the rear panel to dislodge the spring fingers. Then lift the top plate off of the chassis. CAUTION: When re- installing the top plate, ensure all 11 spring fingers engage the chassis and front panel as designed. Torque the screws to 5 in- lbs.
Chapter 5: Replacing Assemblies To remove and replace the cover, top plate, and bottom plate Figure 5-7 11 To replace the cover, top plate, and bottom plate, reverse this procedure. Note that all sheet metal holes that are supposed to have screws placed in them are marked by lines on four sides of the hole as shown in Figure 5- 8.
Chapter 5: Replacing Assemblies To remove and replace the front panel assembly To remove and replace the front panel assembly 1 Disconnect the power cable and remove the cover, top plate, and bottom plate as described earlier. 2 If you are removing the keyboard, grasp and pull on all knobs located on the front panel to remove them (Figure 5- 9). If you are not removing the keyboard, this step is not necessary.
Chapter 5: Replacing Assemblies To remove and replace the front panel assembly 6 Disconnect each input cable. (When reconnecting, you can determine the appropriate connections by matching the colored o- ring to the bezel color. Tighten to 8 in- lbs using a calibrated 5/16” open end torque wrench.) See Figure 5- 11. Figure 5-11 7 Remove the attenuator power cable from each input channel attenuator as shown in Figure 5- 12. The attenuators are keyed to match the connectors.
Chapter 5: Replacing Assemblies To remove and replace the front panel assembly Figure 5-12 Remove this connection from each channel attenuator and then route the entire cable through the backplane b 8 Remove the six M3 screws that attach the side of the chassis and the front panel assembly. (Torque to 5 in- lbs when installing and the screws must be tightened in the order shown in Figure 5- 13 below.) Figure 5-13 9 Tilt the front panel up to see the cables connected to it.
Chapter 5: Replacing Assemblies To remove and replace the front panel assembly Figure 5-14 CAUTION When setting the front panel on the chassis to install the front panel assembly onto the oscilloscope, make sure not to damage the cables. 10 To replace the front panel assembly, reverse this procedure.
Chapter 5: Replacing Assemblies To remove and replace front panel assembly parts To remove and replace front panel assembly parts Remove the front panel assembly as described in the previous section. Front Panel Clutches W A R N IN G This step will ruin the clutches. You will have to replace them with new ones. 1 Use a thin item such as a ribbon to protect the oscilloscope from scratches, and pull on the dark gray plastic clutches to pop them off of the oscilloscope.
Chapter 5: Replacing Assemblies To remove and replace front panel assembly parts 4 Disconnect the cables shown below from the board. Figure 5-16 5 Disengage the four tabs holding the board to the keypad as shown below. Figure 5-17 6 To reassemble the front panel circuit board, reverse these steps.
Chapter 5: Replacing Assemblies To remove and replace front panel assembly parts Display Assembly 1 Remove the front panel assembly and front panel bezel as described previously. 2 Remove the inverter shield from the deck by angling it as shown below. Figure 5-18 3 Remove the two screws holding the display to the chassis as shown below. Figure 5-19 Front Panel Control Board on this side 4 Slide the display away from the control panel to disengage the tabs.
Chapter 5: Replacing Assemblies To remove and replace the motherboard To remove and replace the motherboard 1 Disconnect the power cable and remove the cover and top plate as described previously. 2 Disconnect all the cables from the motherboard (see page 103). 3 Remove the M3 screws attaching the motherboard to the frame. When installing, torque to 5 in- lbs. 4 Loosen the four screws in the large fan as shown below. Figure 5-21 5 Pull the motherboard toward the front panel and then lift out.
Chapter 5: Replacing Assemblies To remove and replace the acquisition boards/backplane/optional MSO assembly To remove and replace the acquisition boards/backplane/optional MSO assembly The graphics in this chapter are representative of the oscilloscope at the time of this printing. Your unit may look different. 1 Disconnect the power cable and remove the cover, top plate, and bottom plate as described previously.
Chapter 5: Replacing Assemblies To remove and replace the acquisition boards/backplane/optional MSO assembly 4 Loosen the two screws located at the bottom of the power supply and then push the power supply toward the side of the oscilloscope with the fans. With it pushed to the side, you can tighten the screws back down into a set of new holes to keep the power supply in place when you flip the oscilloscope over in an upcoming step.
Chapter 5: Replacing Assemblies To remove and replace the acquisition boards/backplane/optional MSO assembly 5 Loosen the two screws near the motherboard / rear panel. Figure 5-26 6 Turn the oscilloscope upside down and remove the SMA connections to the bottom of the backplane board (Figure 5- 27). When reconnecting, route these cables underneath the input cables.
Chapter 5: Replacing Assemblies To remove and replace the acquisition boards/backplane/optional MSO assembly 7 Disconnect the two semi- rigid Cal Out/Aux Out cables from both the front panel and backplane board. As Figure 5- 28 shows, first disconnect the cables from the rear side of the Cal Out / Aux Out connections and then pull straight back to remove the cables from the backplane board. CAUTION: Be sure to pull straight back to avoid bending or breaking the connection to the backplane board.
Chapter 5: Replacing Assemblies To remove and replace the acquisition boards/backplane/optional MSO assembly 9 Remove the attenuator power cable from each input channel attenuator and route the cable through the grommet in the backplane (Figure 5- 30). The attenuators are keyed to match the connectors. Figure 5-30 Remove this connection from each channel attenuator and then route the entire cable through the backplane boa 10 Remove the rear panel BNCs (Figure 5- 31).
Chapter 5: Replacing Assemblies To remove and replace the acquisition boards/backplane/optional MSO assembly 11 Remove the two M4 screws from top of the backplane board and two M4 screws from the rear of the instrument as shown below. The bottom photo shows the rear screws with the optional MSO assembly. Figure 5-32 12 Ensure all cables are disconnected from the backplane board. (You will need to look from both the top and bottom of the oscilloscope to see them all and reach them.
Chapter 5: Replacing Assemblies To remove and replace the acquisition boards/backplane/optional MSO assembly Figure 5- 34 and Figure 5- 35 show the removed assemblies, with and without the optional MSO assembly.
Chapter 5: Replacing Assemblies To remove the backplane assembly from the acquisition/optional MSO assembly To remove the backplane assembly from the acquisition/optional MSO assembly 1 Remove the entire acquisition/backplane/optional MSO assembly as described in the previous section. 2 Remove the four M4 screws (two per acquisition assembly) on the side of the backplane assembly (Figure 5- 36). If the scope is an MSO model, also remove the two M4 screws connecting the MSO assembly.
Chapter 5: Replacing Assemblies To remove the backplane assembly from the acquisition/optional MSO assembly 6 Use the handles on the acquisition tray to separate the backplane assembly from each of the acquisition assemblies, and remove the MSO assembly on MSO models. This step requires some force as the assemblies have numerous connections and pins. 7 If the scope is an MSO model, carefully guide the cables from the acquisition boards through the slots in the MSO assembly.
Chapter 5: Replacing Assemblies To remove the backplane assembly from the acquisition/optional MSO assembly The semi- rigid cable shown in Figure 5- 39 must be installed correctly. Figure 5-39 Figure 5-40 10 To reassemble the backplane/acquisition assembly, reverse these instructions.
Chapter 5: Replacing Assemblies To set the calibration factors after replacing the acquisition board To set the calibration factors after replacing the acquisition board The calibration/self test procedure must be performed after replacing the acquisition board. Consult the calibration chapter in this Service Guide. Let the oscilloscope warm up before testing or calibrating.
Chapter 5: Replacing Assemblies To remove and replace the hard disk drive To remove and replace the hard disk drive Use this procedure to remove and replace the hard disk drive. When necessary, refer to other removal procedures. The graphics in this chapter are representative of the oscilloscope at the time of this printing. Your unit may look different. 1 Disconnect the power cable and remove the cover and top plate as described previously. 2 Disconnect the cables connected to the hard drive.
Chapter 5: Replacing Assemblies To remove and replace the hard disk drive 5 With the hard disk drive and its frame removed, you can remove the hard disk drive from the frame by removing the four screws shown in Figure 5- 43. Figure 5-43 6 To replace the hard disk drive, reverse the above procedure.
Chapter 5: Replacing Assemblies Cable removal (for replacing the motherboard) Cable removal (for replacing the motherboard) This section shows the various cables that need to be removed when replacing the motherboard. 1 Disconnect the power cable and remove the top cover. 2 Disconnect all cables from the motherboard. Below is an overview picture showing the cables that need to be removed from the motherboard.
Chapter 5: Replacing Assemblies Cable removal (for replacing the motherboard) Figure 5- 45 shows the cables connected to the backplane board as viewed from the rear of the oscilloscope.
Chapter 5: Replacing Assemblies To remove and replace the power supply To remove and replace the power supply Use this procedure to remove and replace the power supply. When necessary, refer to other removal procedures. The graphics in this chapter are representative of the oscilloscope at the time of this printing. Your unit may look different. WARNING SHOCK HAZARD! If the power supply is defective it could have a dangerous charge on some capacitors.
Chapter 5: Replacing Assemblies To remove and replace the fans To remove and replace the fans WARNING AVOID INJURY! The fan blades are exposed both inside and outside the chassis. Disconnect the power cable before working around the fan. Use extreme caution in working with the oscilloscope to avoid injury. Use this procedure to remove and replace the fans. When necessary, refer to other removal procedures. The graphics in this chapter are representative of the oscilloscope at the time of this printing.
Chapter 5: Replacing Assemblies To remove and replace the USB or GPIB port To remove and replace the USB or GPIB port Use this procedure to remove and replace the USB or GPIB port (GPIB is an option and may not be on your oscilloscope). The procedure is exactly the same for both of these ports so only one will be shown here. When necessary, refer to other removal procedures. The graphics in this chapter are representative of the oscilloscope at the time of this printing. Your unit may look different.
Chapter 5: Replacing Assemblies To remove and replace the USB or GPIB port 108
6 Ordering Replaceable Parts 110 Listed Parts 110 Unlisted Parts 110 Direct Mail Order System 110 Exchange Assemblies 110 Exploded Views 111 Replaceable Parts List 115 Replaceable Parts
Replaceable Parts This chapter describes how to order replaceable assemblies and parts for the Agilent 90000 X- Series oscilloscopes. Service support for this oscilloscope is replacement of parts to the assembly level. Ordering Replaceable Parts Listed Parts To order a part in the parts list, quote the Agilent Technologies part number, indicate the quantity desired, and address the order to the nearest Agilent Technologies Sales Office.
Chapter 6: Replaceable Parts Exploded Views Exploded Views Front Frame and Front Panel 111
Chapter 6: Replaceable Parts Exploded Views Fan and Acquisition Assembly 112
Chapter 6: Replaceable Parts Exploded Views Power Supply and PC Motherboard 113
Chapter 6: Replaceable Parts Exploded Views Sleeve 114
Chapter 6: Replaceable Parts Replaceable Parts List Replaceable Parts List The following table is a list of replaceable parts. Information given for each part includes: • Reference designation in exploded views • Agilent Technologies part number • Total quantity (QTY) in the oscilloscope or an assembly • Description of the part Replaceable Parts Ref. Des. Agilent Part Number QTY A1 5062-1247 1 Assembly - 3.
Chapter 6: Replaceable Parts Replaceable Parts List Replaceable Parts Ref. Des.
Chapter 6: Replaceable Parts Replaceable Parts List Replaceable Parts Ref. Des.
Chapter 6: Replaceable Parts Replaceable Parts List Replaceable Parts Ref. Des. Agilent Part Number QTY Description 54916-61637 1 Cable - Autoprobe 54916-61619 1 Cable - SR Oscillator Reference 54916-61626 1 Cable - Calibration 54916-61628 1 Cable - SMA/SMB Vertical 0.
7 Motherboard Assembly 122 Acquisition Assembly 123 Backplane Assembly 125 Front Panel Assembly 130 Power Supply Assembly 131 MSO Assembly 132 Theory of Operation
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Theory of Operation This chapter describes the basic structure of the oscilloscope and how the parts interact. The oscilloscopes are comprised of five or six main assemblies, depending on the model of the oscilloscope: a motherboard assembly, an acquisition assembly, a backplane assembly, a front panel assembly, and a power supply assembly for all models, plus a Mixed Signal Oscilloscope (MSO) assembly for all MSO models. Figure 7- 1 shows a block diagram of the oscilloscope.
Chapter 7: Theory of Operation Motherboard Assembly Motherboard Assembly The motherboard provides all system control and interface functions for the oscilloscope. The motherboard contains a microprocessor, a hard disk drive interface, ROM, RAM, keyboard and mouse interfaces, connections to the front panel board, and serial interfaces. Pressing the on/off button sends a signal to the motherboard.
Chapter 7: Theory of Operation Acquisition Assembly Acquisition Assembly The acquisition assembly consists of two identical acquisition boards. These two boards connect to the backplane board as shown in Figure 7- 2. Figure 7-2 Acquisition and backplane assemblies The upper acquisition board circuitry samples, digitizes, and stores the signals for channels 3 and 4; the lower acquisition board does the same for channels 1 and 2.
Chapter 7: Theory of Operation Acquisition Assembly Figure 7-3 Oak module and acquisition components 7R 7ULJJHU RQ EDFNSODQH $'& 3RZHU DQG &RQWURO 0(0 &21 0HPRU\ 7ULJJHU &RD[ $WWHQXDWRU $'& 3UHDPS 0(0 &21 0HPRU\ 6DPSOHU &RD[ $WWHQXDWRU 3UHDPS $'& 0(0 &21 7ULJJHU 3RZHU DQG &RQWURO 0HPRU\ 2DN 0RGXOH $'& &RD[ 'LIIHUHQWLDO 6LJQDO 7R 7ULJJHU RQ EDFNSODQH *+] &ORFN &RXSOHU 0(0 &21 0HPRU\ $FT )3*$ The acquisition front end starts at the front panel input connectors, then goes through th
Chapter 7: Theory of Operation Backplane Assembly Backplane Assembly The backplane assembly is a device on the PCI Express (PCIe) bus connected by two SATA cables to the motherboard. The backplane assembly receives +12V DC power through a power interface board from the bulk supply, and all voltages are derived from switching power regulators and other circuitry. Most of the switching and circuitry are on the backplane board, with some distribution and generation done on the acquisition boards.
Chapter 7: Theory of Operation Backplane Assembly Main FPGA The main FPGA (field- programmable gate array) is the only communication link from the oscilloscope hardware to the PC system. All system controls and data pass through the main FPGA. Figure 7- 5 shows the connections to the main FPGA.
Chapter 7: Theory of Operation Backplane Assembly The main FPGA uses three identical buses to communicate with three different downstream FPGAs. The buses are 8- bit parallel buses with miscellaneous control signals. One bus is used to control the trigger functions in the backplane board and one bus connects to each of the two acquisition boards. A separate bus for each FPGA minimizes timing problems and reflections.
Chapter 7: Theory of Operation Backplane Assembly The fundamental sample clock is a single- ended 10 GHz signal distributed to each Oak module and the Wahoo timebase IC through semi- rigid coax. In each case, the singleended signal is converted to a differential signal using a bandpass filtered 180° phase splitter implemented using microwave structures on shielded inner layers of the PCB. The Wahoo timebase IC divides the 10 GHz CW clock down into multiple 1 GHz and 250 MHz clocks.
Chapter 7: Theory of Operation Backplane Assembly Figure 7-7 10 GHz clock generation 0+] 5HI ,Q 0+] 5HI 2XW 0+] (OPRUH *+] '52 *+] 6DPSOH &ORFN 0+] 2&;2 The external 10 MHz reference is applied through a rear- panel BNC connector and runs to the backplane assembly. Users can select between an internal and external reference through a dialog box in the oscilloscope application.
Chapter 7: Theory of Operation Front Panel Assembly Front Panel Assembly The front panel assembly consists of a front panel board, on/off board, display board, touch screen and controller, AutoProbe II interface board for probe power and probe control, backlight inverter board, front panel connectors, and cabling connectors for the AutoProbe II interface. Front Panel Board The front panel board provides the main user interface to the instrument through dedicated knobs and pushbuttons.
Chapter 7: Theory of Operation Power Supply Assembly Power Supply Assembly The power supply assembly consists of a power interface board and a bulk +12V power supply. The power interface board does filtering and provides 60 Hz line trigger to the oscilloscope.
Chapter 7: Theory of Operation MSO Assembly MSO Assembly The MSO assembly consists of a printed circuit assembly that fits below the lower acquisition board. It provides digital channel capability. Figure 7- 9 shows the circuitry of the MSO board. Figure 7- 10 shows how the FPGA on the MSO board communicates with the Main FPGA on the backplane board. Figure 7-9 MSO Printed Circuit Assembly )3*$ 6FRSH FKDQQHOV ; &RPSDUDWRU *3GDWD 6(5'(6 6(5'(6 6(5'(6 5HI 0+]&ON 062B,75,* 0$5.
Safety Notices This apparatus has been designed and tested in accordance with IEC Publication EN 61010-1:2001, Safety Requirements for Measuring Apparatus, and has been supplied in a safe condition. This is a Safety Class I instrument (provided with terminal for protective earthing). Before applying power, verify that the correct safety precautions are taken (see the following warnings). In addition, note the external markings on the instrument that are described under "Safety Symbols.
Notices © Agilent Technologies, Inc. 2013 No part of this manual may be reproduced in any form or by any means (including electronic storage and retrieval or translation into a foreign language) without prior agreement and written consent from Agilent Technologies, Inc. as governed by United States and international copyright laws.
